参数资料
| 型号： | ISL59834IRZ |
| 厂商： | Intersil |
| 文件页数： | 7/17页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO FILTER CHRG PUMP 44-QFN |
| 标准包装： | 43 |
| 应用： | 滤波器 |
| 电路数： | 4 |
| -3db带宽： | 9MHz |
| 电流 - 电源： | 28mA |
| 电流 - 输出 / 通道： | 50mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-VFQFN 裸露焊盘 |
| 供应商设备封装： | 44-QFN-EP（7x7） |
| 包装： | 管件 |
| 产品目录页面： | 1247 (CN2011-ZH PDF) |
15
FN6268.1
June 11, 2008
is longer because extra time is needed for the charge pump
to settle before the amplifiers are enabled. When disabled,
the device supply current is reduced to 5A. Power-down is
controlled by standard TTL or CMOS signal levels at the
ENABLE pins. The applied logic signal is relative to the GND
pin. Applying a signal that is less than 0.8V above GND will
disable the device. The device will be enabled when the
ENABLE signals are 2V above GND.
Output Drive Capability
The maximum output current for the ISL59834 is ±50mA.
Maximum reliability is maintained if the output current never
exceeds ±50mA, after which the electro-migration limit of the
process will be exceeded and the part will be damaged. This
limit is set by the design of the internal metal
interconnections.
Driving Capacitive Loads and Cables
The ISL59834 (internally-compensated to drive 75
Ω cables)
will drive 10pF loads in parallel with 150
Ω or 75Ω with less
than 1.3dB of peaking.
Power Dissipation
With the high output drive capability of the ISL59834, it is
possible to exceed the +150°C absolute maximum junction
temperature under certain load current conditions.
Therefore, it is important to calculate the maximum junction
temperature for an application to determine if load conditions
or package types need to be modified to assure operation of
the amplifier in a safe operating area.
The maximum power dissipation allowed in a package is
determined according to Equation 1:
Where:
TJMAX = Maximum junction temperature
TAMAX = Maximum ambient temperature
Θ
JA = Thermal resistance of the package
The maximum power dissipation actually produced by an IC
is the total quiescent supply current times the total power
supply voltage, plus the power in the IC due to the load, or:
for sourcing:
for sinking:
Where:
VS = Supply voltage
ISMAX = Maximum quiescent supply current
VOUT = Maximum output voltage of the application
RLOAD = Load resistance tied to ground
ILOAD = Load current
i = Number of output channels
By setting Equation 1 equal to Equation 2 and 3, we can
solve for the output current and RLOAD values needed to
avoid exceeding the maximum junction temperature.
Power Supply Bypassing and Printed Circuit
Board Layout
As with any high frequency device, a good printed circuit
board layout is necessary for optimum performance. Strip
line design techniques are recommended for the input and
output signal traces to help control the characteristic
impedance. Furthermore, the characteristic impedance of
the traces should be 75
Ω. Trace lengths should be as short
as possible between the output pin and the series 75
Ω
resistor. The power supply pin must be well bypassed to
reduce the risk of oscillation. For normal single supply
operation, a single 4.7F tantalum capacitor in parallel with a
0.1F ceramic capacitor from VS and VCP to GND will
suffice.
The AC performance of this circuit depends greatly on the
care taken in designing the PC board. The following are
recommendations to achieve optimum high frequency
performance from your PC board.
Use low inductance components, such as chip resistors
and chip capacitors whenever possible.
Minimize signal trace lengths. Trace inductance and
capacitance can easily limit circuit performance. Avoid
sharp corners; use rounded corners when possible. Vias
in the signal lines add inductance at high frequency and
should be avoided. PCB traces longer than 1" begin to
exhibit transmission line characteristics with signal rise/fall
times of 1ns or less. To maintain frequency performance
with longer traces, use striplines.
Match channel-to-channel analog I/O trace lengths and
layout symmetry. This will minimize propagation delay
mismatches.
Route all signal I/O lines over continuous ground planes
(i.e. no split planes or PCB gaps under these lines).
Place termination resistors in their optimum location as
close to the device as possible.
PD
MAX
T
JMAX
T
AMAX
–
Θ
JA
---------------------------------------------
=
(EQ. 1)
PD
MAX
V
S
I
SMAX
V
S
V
OUT i
–
()
+
×
V
OUTi
R
LOADi
---------------------
×
=
(EQ. 2)
PD
MAX
V
S
I
SMAX
V
OUTiVS
–
()
+
×
I
LOAD i
×
=
(EQ. 3)
ISL59834
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL59837 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:200MHz Single Supply Video Driver With Charge Pump and Power Down |
| ISL59837IAZ | 功能描述:IC VIDEO DRIVER TRUE SGL 16-QSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 应用:TFT-LCD 面板：VCOM 驱动器 输出类型:满摆幅 电路数:1 -3db带宽:35MHz 转换速率:40 V/µs 电流 - 电源:3.7mA 电流 - 输出 / 通道:1.3A 电压 - 电源，单路/双路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 供应商设备封装:8-uMax-EP 包装:管件 |
| ISL59837IAZ-EVALZ | 功能描述:EVAL BOARD FOR ISL59837IAZ RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:* 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| ISL59837IAZ-T7 | 功能描述:IC VIDEO DRIVER TRUE SGL 16-QSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 标准包装:1,000 系列:- 应用:驱动器 输出类型:差分 电路数:3 -3db带宽:350MHz 转换速率:1000 V/µs 电流 - 电源:14.5mA 电流 - 输出 / 通道:60mA 电压 - 电源，单路/双路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安装类型:表面贴装 封装/外壳:20-VFQFN 裸露焊盘 供应商设备封装:20-QFN 裸露焊盘（4x4） 包装:带卷 (TR) |
| ISL59885 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Auto-Adjusting Sync Separator for HD and SD Video |
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